# pawurb/hotpath-rs

Quickly find bottlenecks in Rust - one profiler for CPU, memory, SQL, HTTP, I/O and async code.

Repository: https://github.com/pawurb/hotpath-rs
Canonical: https://ross.abutalabs.com/products/hotpath-rs
Homepage: https://hotpath.rs
Language: Rust
License: MIT
License Family: permissive
Topics: allocations, benchmark, performance, rust, debugging, mpsc, profiler, mcp
Last push: 2026-08-26T15:43:14+00:00

## Health v2 (maintenance only)
Score: 84/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 25
- inputs: {"age_days": 362, "days_push": 7, "days_rel": 11, "gap_med": 4, "n_releases_24m": 58}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1695, forks 50 (observed 2026-08-28T04:05:23.549042+00:00)

## What it is
hotpath-rs is an easy-to-configure Rust performance profiler that pinpoints where code spends time, burns CPU, and allocates memory. It instruments functions, channels, futures, streams, SQL queries, HTTP calls, and I/O, offering one-off reports and a live TUI dashboard, plus MCP support for AI coding agents.

## Use cases
- find cpu bottlenecks in rust code
- profile memory allocations and leaks in rust
- measure sql query performance with sqlx or diesel
- monitor throughput and latency of io streams
- profile async channels and futures
- track http client and axum route latency
- let an ai agent set up profiling in a repo

## When to choose
- you need a low-setup profiler for Rust covering CPU, memory, SQL, HTTP, I/O and async
- you want to distinguish I/O-bound from CPU-bound slowness
- you want live TUI monitoring or agent-friendly profiling setup

## When to avoid
- you need profiling for languages other than Rust
- you need a full-fidelity sampling profiler with flamegraphs rather than instrumentation-based metrics
- your project cannot tolerate instrumentation overhead in hot paths

## Facets
- artifact type: library
- maturity: active
- function: benchmarking, monitoring, tracing, developer-tools, cli
- domain: performance, developer-tools, monitoring
- platform: rust, cli, cross-platform
- tags: profiler, memory-profiling, cpu-profiling, async-profiling, sql-profiling, io-monitoring, tui, mcp, rust, command-line

## Member repositories
- pawurb/hotpath-rs (main) score 84

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:23.549042+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:37:56.728554+00:00, confidence not recorded.
  - readme: https://github.com/pawurb/hotpath-rs (fetched 2026-08-28T04:05:23.549042+00:00, sha 871b146cf5fb)
  - homepage: https://hotpath.rs (fetched 2026-08-29T11:12:52.345874+00:00, sha 92fe04d34d1a)
- Data as of 2026-08-30T08:39:29.467469+00:00.